Systems and method for an electric powertrain
AssigneeDana Belgium N.V.
InventorsFilip D. Schacht, Wieguo Zhao
Life of this patent
Estimating the term…
Abstract
Systems and a method are provided for a transmission system. In one example, a system includes a first input shaft coupled to a first prime mover and a first motor gear, a second input shaft coupled to a second prime mover and a second motor gear, a planet carrier coupled to a planetary shaft engaged to a first clutch via a planetary gear and a first clutch gear or to a second clutch shaft of a second clutch on which a second clutch gear is arranged, and an output shaft, wherein the first clutch gear is arranged on the output shaft, further comprising an output shaft gear arranged on the output shaft and meshed with the second clutch gear.
Claims20
A multi-speed transmission, comprising:
- a first input shaft coupled to a first prime mover and a first motor gear;
- a second input shaft coupled to a second prime mover and a second motor gear;
- a planet carrier coupled to a planetary shaft engaged to a first clutch via a planetary gear and a first clutch gear or to a second clutch shaft of a second clutch on which a second clutch gear is arranged;
- a second gear meshed to the first clutch gear of the first clutch, wherein the second gear is directly coupled to the second clutch;
- and
- an output shaft, wherein the first clutch gear is arranged on the output shaft, further comprising an output shaft gear arranged on the output shaft and meshed with the second clutch gear.
A system, comprising:
- a transmission system coupled to two motors via a first input shaft and a second input shaft;
- a planetary gear set comprising a plurality of gears, a carrier, and a planet shaft;
- a pair of clutches configured to adjust power flow through the transmission system to different ends of an output shaft, wherein a first clutch transfers power from a gear of the planetary gear set to the output shaft and a second clutch transfers power from the planet shaft to an output shaft gear wherein the first clutch comprises a first clutch gear in a meshed coupling with the gear of the planetary gear set;
- and
- a second gear meshed to the first clutch gear of the first clutch, wherein the second gear is directly coupled to the second clutch.
A method for operating clutches of a two-speed transmission, comprising:
- activating a first clutch of the two-speed transmission and flowing power from only a first motor to a planet shaft of a planetary gear set, to a planet gear, to a first clutch gear meshed with the planet gear, and to an output shaft on which the first clutch gear is arranged during a first operation;
- and
- activating a second clutch of the two-speed transmission and deactivating the first clutch during a second operation, further comprising flowing power from each of the first motor and a second motor to the planet shaft of the planetary gear set, to a second clutch shaft coupled to the planet shaft, to a second clutch gear arranged on the second clutch shaft, and to an output shaft gear arranged on the output shaft, wherein a second gear is meshed to the first clutch gear of the first clutch, and wherein the second gear is directly coupled to the second clutch.
Dependencies are inferred from the claim text.